CP2102N-A02-GQFN28R

The Silicon Labs CP2102N-A02-GQFN28R is a highly integrated USB-to-UART bridge IC that converts USB 2.0 Full-Speed (12Mbps) communication into a standard asynchronous serial interface. It supports configurable UART data rates from 300 baud up to 3Mbps and operates from a supply voltage range of 3.0V to 3.6V. The device integrates a USB transceiver, internal oscillator, voltage regulator, and a 960-byte programmable configuration ROM within a compact 28-pin QFN package measuring 5.0mm × 5.0mm. The QFN28 variant also provides up to seven configurable GPIOs, hardware flow-control signals, and programmable USB configuration data, reducing external component requirements in embedded designs.

The CP2102N-A02-GQFN28R supports Silicon Labs Virtual COM Port (VCP) drivers for Windows, macOS, and Linux, allowing the device to appear as a standard COM port to existing serial applications. It also supports USBXpress direct-access drivers for applications using the Silicon Labs USBXpress API. The UART interface provides TXD, RXD, RTS, CTS, DTR, DSR, DCD, and RI signals, supporting standard serial communication and hardware flow control.

The CP2102N-A02-GQFN28R is specified for operation across an industrial temperature range of -40°C to +85°C and typically consumes approximately 9.5mA during normal operation. The device integrates an internal oscillator, voltage regulator, and USB transceiver to reduce external component count and simplify system design. It also supports USB suspend and remote wakeup functions for power management. Following the recommended power-supply connections, bypass capacitor placement, and USB interface reference circuits helps ensure reliable operation.

The CP2102N-A02-GQFN28R is supplied in a 28-pin QFN package with an exposed center pad that should be soldered to the PCB ground. The recommended connection diagrams specify placing 4.7µF and 0.1µF bypass capacitors as close as possible to each power pin and following the reference circuits for the selected bus-powered or self-powered configuration. The VBUS connection should also follow the recommended reference design to ensure proper device operation.

The CP2102N-A02-GQFN28R integrates USB-to-UART conversion, a USB transceiver, an internal oscillator, a voltage regulator, and programmable USB configuration memory within a compact 5.0mm × 5.0mm package. It supports UART communication speeds up to 3Mbps and provides configurable GPIOs, hardware flow control, USB suspend support, remote wakeup, and programmable USB descriptors. The "R" suffix identifies the tape-and-reel packaging option intended for automated SMT assembly.